Description of problem:
When I try to upload a 2.8 GiB SRPM over an O2 Fiber connection from my flat, the copr-cli process is terminated with traceback showing a division by zero in python-progress.


Version-Release number of selected component (if applicable):
copr-cli-1.100-1.fc35.noarch
python3-progress-1.5-10.fc35.noarch


Steps to Reproduce:
1. copr-cli --config=/home/kdudka/.config/copr-kdudka build --nowait covscan src/cov-sa202206-2022.6.0-4.fc35.src.rpm


Actual results:
Uploading package src/cov-sa202206-2022.6.0-4.fc35.src.rpm
 |#                               | 145.2 MB 5.0 kB/s eta 6 days, 11:28:19
Traceback (most recent call last):
  File "/usr/bin/copr-cli", line 33, in <module>
    sys.exit(load_entry_point('copr-cli==1.100', 'console_scripts', 'copr-cli')())
  File "/usr/lib/python3.10/site-packages/copr_cli/main.py", line 1827, in main
    getattr(commands, arg.func)(arg)
  File "/usr/lib/python3.10/site-packages/copr_cli/main.py", line 140, in wrapper
    return func(self, args)
  File "/usr/lib/python3.10/site-packages/copr_cli/main.py", line 342, in action_build
    builds.append(self.process_build(args, build_function, data, bar=bar, progress_callback=progress_callback))
  File "/usr/lib/python3.10/site-packages/copr_cli/main.py", line 431, in process_build
    result = build_function(ownername=username, projectname=projectname,
  File "/usr/lib/python3.10/site-packages/copr/v3/helpers.py", line 68, in wrapper
    result = func(*args, **kwargs)
  File "/usr/lib/python3.10/site-packages/copr/v3/proxies/build.py", line 150, in create_from_file
    return self._create(endpoint, data, files=files, buildopts=buildopts)
  File "/usr/lib/python3.10/site-packages/copr/v3/helpers.py", line 68, in wrapper
    result = func(*args, **kwargs)
  File "/usr/lib/python3.10/site-packages/copr/v3/proxies/build.py", line 307, in _create
    response = request.send(
  File "/usr/lib/python3.10/site-packages/copr/v3/requests.py", line 50, in send
    response = self._send_request_repeatedly(session, request_params)
  File "/usr/lib/python3.10/site-packages/copr/v3/requests.py", line 61, in _send_request_repeatedly
    response = session.request(**request_params)
  File "/usr/lib/python3.10/site-packages/requests/sessions.py", line 529, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3.10/site-packages/requests/sessions.py", line 645, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3.10/site-packages/requests/adapters.py", line 440, in send
    resp = conn.urlopen(
  File "/usr/lib/python3.10/site-packages/urllib3/connectionpool.py", line 699, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3.10/site-packages/urllib3/connectionpool.py", line 394, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib/python3.10/site-packages/urllib3/connection.py", line 239, in request
    super(HTTPConnection, self).request(method, url, body=body, headers=headers)
  File "/usr/lib64/python3.10/http/client.py", line 1282, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib64/python3.10/http/client.py", line 1328, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.10/http/client.py", line 1277, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/lib64/python3.10/http/client.py", line 1066, in _send_output
    for chunk in chunks:
  File "/usr/lib64/python3.10/http/client.py", line 1021, in _read_readable
    datablock = readable.read(self.blocksize)
  File "/usr/lib/python3.10/site-packages/requests_toolbelt/multipart/encoder.py", line 403, in read
    self.callback(self)
  File "/usr/lib/python3.10/site-packages/copr_cli/main.py", line 331, in progress_callback
    bar.next(n=8192)
  File "/usr/lib/python3.10/site-packages/progress/__init__.py", line 146, in next
    self.update()
  File "/usr/lib/python3.10/site-packages/progress/bar.py", line 39, in update
    suffix = self.suffix % self
  File "/usr/lib/python3.10/site-packages/progress/__init__.py", line 94, in __getitem__
    return getattr(self, key, None)
  File "/usr/lib/python3.10/site-packages/copr_cli/util.py", line 19, in download_speed
    if self.avg == 0.0:
  File "/usr/lib/python3.10/site-packages/progress/__init__.py", line 102, in avg
    speed = self.window.avg
  File "/usr/lib/python3.10/site-packages/progress/__init__.py", line 63, in avg
    return self.counter / (self.last - self.deque[0][0])
ZeroDivisionError: float division by zero